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PostPosted: 12.04.2004 20:22 
mmm well first of all give thanks to all who is making this things 4 us... this is incredible... now im learning "Basic electricity for moders" ... whow this rox... well my question is:
that resistor have a brown,black,black,black,brown ring.
u say it was a 100ohms resistor... but 1-0 *1 and then.... :?:

plz look http://www.metku.net/index.html?sect=vi ... x_eng#ohmi that table and explain me plz.


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PostPosted: 12.04.2004 20:30 
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I don't spot the position where I said something about 100 ohm resistor?

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PostPosted: 12.04.2004 20:32 
well sorry to post again... but i have like 53472345 questions
i have a led. a yellow one... how can i get how much V it needs???... and how can i estimate the instensity (A or mA) of a circuit?


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PostPosted: 12.04.2004 21:06 
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Knowing only the color of the led doesn't get you anywhere. You might try for example 3 volts and 20mA as a base value and see if the led gets warm with that voltage. If it does, rise the resistor value a bit.

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PostPosted: 02.05.2004 22:04 
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okay if you're not sure what resistor you need i suggest buying a 470 ohm or similar PCB mountable potentiometer and install that slowly lower the impendance from max and when you'r led starts to get warm or you feel that it has reached it's max light power leave it there that should solve these problems

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PostPosted: 02.05.2004 23:52 
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or after you find the right adjustment, use a multimeter and test how much power the led is getting. Then you can use the correct resistor all the time.

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